CN108995858B

CN108995858B - Automatic crab binding equipment of arc rail mounted

Info

Publication number: CN108995858B
Application number: CN201811174751.XA
Authority: CN
Inventors: 董继先; 赵顺; 杨琸之; 温家豪; 王怡
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2020-07-07
Anticipated expiration: 2038-10-09
Also published as: CN108995858A

Abstract

An automatic crab binding device with an arc-shaped rail comprises a base, wherein a two-dimensional moving platform is arranged on the base, an arc-shaped rail is arranged on the outer side of the two-dimensional moving platform in a surrounding mode, a fixing mechanism is arranged on the two-dimensional moving platform, a supporting column used for supporting the arc-shaped rail is arranged below the arc-shaped rail and matched with the base, a feeding hole, a rotating hole and a discharging hole are formed in the arc-shaped rail, linear lifting mechanisms are arranged below the feeding hole and the discharging hole, a linear rotating lifting mechanism is arranged below the rotating hole, a D-shaped knotter, a wire rope used for binding crabs and a wire coiling cylinder used for storing the wire rope are arranged on the fixing mechanism, mechanization of crab binding is achieved, binding safety and efficiency are improved, and investment of manpower and material resources is reduced, and the crab fixing and binding are convenient, and meanwhile, the effective binding quality is ensured and the damage to the crab is avoided.

Description

Automatic crab binding equipment of arc rail mounted

Technical Field

The invention relates to the technical field of crab binding, in particular to an arc-shaped rail type automatic crab binding device.

Background

Along with the popularization of automatic machines in various aspects in recent years, more and more people focus on the seafood and aquatic product industry with extremely high value, in particular to steamed crabs with high nutrition. However, it is known that only crabs are bound during transportation or cooking, so that the crabs are prevented from climbing around. If the crabs are not bound, the physical strength of the crabs is consumed to accelerate the emaciation speed of the crabs, and the crabs can be injured or the legs of the crabs can be cut off in the process of fighting during the movement of the crabs. However, in the actual production, the manual crab binding has high requirements on workers, and is time-consuming, labor-consuming, dangerous and the like. Therefore, the appearance of the automatic crab binding equipment with low cost and high efficiency in a plurality of crab farmers is forced to be up to the future.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the arc-shaped rail type automatic crab binding device, which realizes mechanization of crab binding, improves binding safety and efficiency, reduces the investment of manpower and material resources, is convenient for fixing and binding crabs, and simultaneously ensures the quality of effective binding and avoids damaging the crabs.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an automatic crab of arc rail type binds equipment, includes base 1, base 1 above be provided with two-dimensional moving

platform

2, 2 outside encircles and is provided with circular arc type track 3 of two-dimensional moving platform 2, be provided with fixed establishment 8 on the two-dimensional moving platform 2, circular arc type track 3 below is provided with the support column 5 that is used for supporting circular arc type track 3, support column 5 cooperates with base 1, circular arc type track 3 on be provided with feed inlet 301, revolving mouth 302 and discharge gate 303, feed inlet 301 and discharge gate 303 below are provided with orthoscopic elevating system 6, revolving mouth 302 below is provided with orthoscopic rotation formula elevating system 7, be provided with D type knotter 4 on the fixed establishment 8, be used for binding crab's wire rope 9 and the wire barrel 10 of depositing the wire rope.

The two-dimensional moving platform 2 comprises two transverse ball screw guide rails 201 and a longitudinal ball screw guide rail 202, wherein the longitudinal ball screw guide rail 202 is also provided with a guide rail platform 203 for arranging a rotary rod 204, the rotary rod 204 is provided with a U-shaped fixed arm 205 in a bearing mode, the ball screw guide rail is fixed on the base 1 through bolts, and two supporting seats are arranged below the longitudinal ball screw guide rail 202 and connected with the two transverse ball screw guide rails 201.

The fixing mechanism 8 comprises an L-shaped baffle 801 connected with the U-shaped fixing arm 205, an expansion link 802 with a spring in the L-shaped baffle 801, a roller 803 connected with the expansion link 802 and capable of freely sliding in the arc-shaped track 3, and a joint 804 matched with the U-shaped fixing arm 205.

The U-shaped fixing arm 205 is formed by two symmetrical structures with identical parts.

Two L-shaped baffles 801 are rigidly connected with a roller 803 which can freely slide in the arc-shaped track 3 through telescopic rods 802 containing springs, the other two L-shaped baffles 801 are connected with a U-shaped fixing arm 205 through telescopic rods 802 containing springs, every two L-shaped baffles 801 form a group, and the four telescopic rods 802 containing springs are divided into two groups corresponding to the two groups.

The inner side of the L-shaped baffle 801 is filled with flexible sponge-like foam materials.

The rotating port 302 is provided with high-strength glass 11.

The linear lifting mechanism 6 comprises a feeding hole lifting mechanism 601 and a discharging hole lifting mechanism 602, and the places on the feeding hole lifting mechanism 601 and the discharging hole lifting mechanism 602 for bearing and placing crabs are special-shaped grooves.

D type knotter 4 include drive fluted disc 401, drive fluted disc 401 drives through electric putter A408, D type knotter 4 is provided with the wire device 407 that matches with the D knotter, the wire device 407 that the D knotter matches drives through electronic rotary rod B409, D type knotter 4 with, the wire device 407 that the D knotter matches is leading-in to knotting mouth 403 of knotter with silk rope 9, knotting mouth 403 sets up with the cooperation that has the breach dish at worm 405 and the knife rest 406 that is used for cutting off silk rope 9.

The four D-shaped knotters 4 are arranged in parallel, four sets of the D-shaped knotters and the wire guiding devices 407 matched with the parallel D-shaped knotters are arranged, each set of the D-shaped knotters and the wire guiding devices are used for transversely knotting and longitudinally knotting, and knotting traces of the two parallel D-shaped knotters to the crabs in each set are not on the same section.

The lifting mechanism is provided with a special-shaped groove, and a telescopic rod and a rotating motor are arranged in the lifting mechanism.

The invention has the beneficial effects that:

the crab binding machine has the advantages that the crab binding mechanization is realized, the binding safety and efficiency are improved, the investment of manpower and material resources is reduced, the fixation and the binding of the crabs are facilitated, the effective binding quality is ensured, and the damage to the crabs is avoided.

The device comprises an arc-shaped track, a fixing mechanism of an L-shaped baffle plate made of flexible sponge foam material on the inner side, a binding mechanism of a parallel D-shaped knotter, and the three mechanisms are matched for use, so that the crab binding accuracy and efficiency are improved. When crabs fall into the receiving platform of the feed inlet lifting mechanism through the feed inlet in a certain posture one by one, the crabs are fixed by the four L-shaped baffles matched with the U-shaped fixed arm, and the crabs are well fixed by the four L-shaped baffles. Wherein two L-shaped baffles are rigidly connected with the roller which can freely slide in the arc-shaped track through the telescopic rods containing the springs, the other two L-shaped baffles are connected with the U-shaped fixed arm through the telescopic rods containing the springs, every two of the four L-shaped baffles form a group, and the four telescopic rods containing the springs are also divided into two groups corresponding to the two groups, so that the excessive extrusion on the fragile shell of the crab can be avoided again, and the crab can be more firmly fixed. In addition, the binding mechanism of the parallel D-shaped knotters can also bind the crabs more densely, the crabs reach the discharge port from the feed port after circulating once and are bound and knotted for four times, namely twice transverse knotting and longitudinal knotting, and the knotting traces of the two parallel D-shaped knotters in each set of the mechanism are not on the same section, so that the crabs can be ensured to be capable of being knotted with different double-well wire rope tracks only by circulating once in the circular arc track, and finally, the double-well wire rope tracks are formed on the crabs.

The parallel D-shaped knotters and the wire guiding devices matched with the parallel D-shaped knotters are four sets in total, each two sets are respectively used for transverse knotting and longitudinal knotting, and the knotting traces of the two parallel D-shaped knotters to the crabs in each set are not on the same cross section, so that different double-well wire rope tracks can be made by one-time circulation of the crabs in the circular arc track.

In the whole knotting and binding process, the wire rope has certain tension in the wire guiding device, so that the knotting firmness is ensured. And high-strength transparent glass is arranged at the rotating port, so that the tying and binding of the crabs can be observed at the rotating port so as to be corrected and improved.

The device changes the action that the existing knotting and winding object must rotate and changes the action that the object does not move the wire rope to wind, so that the advantage of doing so is to avoid the secondary damage of the crabs caused by the instability of the clamp when the crabs rotate, and save a large amount of time. In addition, due to the pollution-free and environment-friendly properties of the silk ropes, the silk ropes do not need to be untied in the processes of transportation, buying and selling and final cooking after the crabs are bound at one time; ensuring the maximum possible integrity of the crab.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic right sectional structural view of the present invention.

Fig. 3 is a schematic structural diagram of a two-dimensional mobile platform according to the present invention.

Fig. 4 is a schematic structural view of the fixing mechanism of the present invention.

Fig. 5 is a schematic view of the overall structure of the parallel D-type knotter of the present invention.

Fig. 6 is a schematic structural view of the main body of the D-type knotter as the core component of the present invention.

In the figure: 1-base, 2-two-dimensional moving platform, 201-transverse ball screw guide rail, 202-longitudinal ball screw guide rail, 203-guide rail platform, 204-rotating rod, 205-U-shaped fixed arm; 3-arc track, 301-feed inlet, 302-rotary port, 303-discharge port; 4-parallel D-type knotter, 401-driving fluted disc, 402-knotter frame, 403-knotting nozzle, 404-helical gear, 405-worm, 406-knife rest, 407-wire device matched with parallel D-type knotter, 408-electric rotating rod A, 409-electric rotating rod B; 5-a support column; 601-a feed inlet lifting mechanism and 602-a discharge outlet lifting mechanism; 7-a lifting mechanism at the rotary port; 8-a fixing mechanism, 801-an L-shaped baffle, 802-a telescopic rod with a spring inside, 803-a roller, 804-a joint matched with a U-shaped fixing arm; 9-silk rope; 10-wire coiling barrel; 11-high strength glass.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the invention relates to an arc-shaped rail type automatic crab binding device, which comprises a base 1, a two-dimensional moving platform 2, an arc-shaped rail 3, a plurality of parallel D-shaped knotters 4, a support column 5, a feed inlet lifting mechanism 601, a discharge outlet lifting mechanism 602, a lifting mechanism 7 at a rotating port and a fixing mechanism 8.

In fig. 2, a right-side sectional structural view of the present invention is shown, so that the working conditions of the parts of the crab can be visually observed when the crab is subjected to a longitudinal or transverse binding and knotting process. After the crabs enter the fixing mechanism 8 from the feeding hole 301 and are firmly fixed by the four L-shaped baffles 801 of the fixing mechanism, the rotating rods 204 on the two-dimensional working platform drive the U-shaped fixing arms 205 to move, and further drive the crabs to move horizontally and vertically along with the two-dimensional working platform 2 in the horizontal plane. When the guide rail platform 203 below the rotating rod 204 moves along the transverse ball screw guide rail 201, the crabs are transversely bound and knotted for the first time; when the rail platform 203 is along the rightmost side of the transverse ball screw rail 201, the rotating rod 204 can rotate 90 degrees to drive the crabs to rotate 90 degrees; then the rail platform 203 will continue to move along the longitudinal ball screw rail 202, in the process, the crabs will be tied off transversely for the second time; when the rail platform 203 is along the uppermost edge of the longitudinal ball screw rail 201, the rotating rod 204 performs a 90-degree rotating action to drive the crabs to rotate 90 degrees; finally, the crabs which are transversely bound and knotted twice arrive at the rotating opening 302, after the crabs rotate 90 degrees through the lifting mechanism 7 at the rotating opening 302, the crabs are longitudinally bound and knotted twice again in the same way as the above steps, and finally, a double-well rope track is completed.

As shown in fig. 3, the two-dimensional moving platform structure is composed of three parts, including two lateral ball screw guide rails 201, a longitudinal ball screw guide rail 202, a rail platform 203, a rotating rod 204 thereon, and a U-shaped fixing arm 205. Since the crab needs to make straight line segment and circular arc segment motions in the circular arc-shaped track 3, a ball screw guide rail in the transverse and longitudinal directions and a rotating rod 204 with a U-shaped fixed arm 205 are required. The ball screw guide rails are fixed on the base 1 through bolts, two supporting seats are arranged below the longitudinal ball screw guide rail 202 and connected with the two transverse ball screw guide rails 201, and when the two transverse ball screw guide rails 201 rotate in the same direction, the longitudinal ball screw guide rail 202 is driven to move back and forth in the horizontal direction; a support seat is also arranged below the guide rail platform 203 and is fixed with the longitudinal ball screw guide rail 202 through bolts, when the longitudinal ball screw guide rail rotates, the guide rail platform 203 is driven, then the rotating rod 204 is driven, the U-shaped fixing arm 205 is further driven, and finally the crabs are driven to move on a horizontal plane in a two-dimensional mode; the rotating rod 204 is provided with a rotating motor, and can rotate clockwise or counterclockwise by 90 degrees under the action of an electric signal, and then drives the U-shaped fixing arm 205 to rotate, so as to drive the fixing mechanism 8 to rotate, and finally drives the crabs to rotate and move on the horizontal plane.

As shown in fig. 4, the fixing mechanism 8 is a key mechanism for connecting the two-dimensional moving platform and the crab, and comprises an L-shaped baffle 801, a telescopic rod 802 containing a spring, a roller 803 and a joint 804 matched with a U-shaped fixing arm. Two L-shaped baffles 801 are rigidly connected with a roller 803 which can freely slide in the arc-shaped track 3 through telescopic rods 802 containing springs, the other two L-shaped baffles 801 are connected with a U-shaped fixed arm through telescopic rods containing springs, every two of the four L-shaped baffles form a group, and the four telescopic rods containing springs are divided into two groups corresponding to the two groups. When the crabs move to the center of the fixing mechanism through the lifting mechanism of the feeding hole 301 or the rotating hole 302, the two L-shaped baffles 801 connected with the U-shaped fixing arm 205 start to squeeze the crabs under the pushing action of the telescopic rod, but the flexible sponge-like foam materials filled inside the L-shaped baffles 801 can protect the crabs from being crushed due to excessive squeezing. In addition, the telescopic rods of the other two L-shaped baffles 801 rigidly connected with the rollers 803 which freely slide in the arc-shaped track 3 contain springs which can passively adjust the telescopic amount to match the two L-shaped baffles at the outer side to firmly fix the crab.

As shown in fig. 5, the parallel D-shaped knotter 4 comprises two D-shaped knotters 4 and wire guiding devices 407 matched with the two D-shaped knotters, and four sets of the parallel D-shaped knotters respectively complete two knotting and binding of crabs in the transverse direction and the longitudinal direction in the device. Through practical analysis, when the double-well silk ropes of the crabs are knotted, the firmness of the double-well silk ropes is improved compared with that of single cross knotting, and the knotting process is reduced, so that one crab is prevented from being knotted back and forth for multiple times.

As shown in fig. 6, the rotating motor installed on the electric push rod a408 drives the driving fluted disc 401 of the D-type knotter 4 to move through a key, the wire guiding device 407 matched with the parallel D-type knotter enables the wire 9 to pass through the arc-shaped rope guiding notch of the cutting knife and to be tightly attached to the movable claw of the knotting mouth 403, and the wire is sent into a notch disc of the knotter frame 402, and the notch disc rotates 1/8 weeks under the driving of the worm mechanism 405. The wire 9 is carried downwards and clamped due to the pressure of the rope pressing baffle, the knotting mouth 403 rotates 3/4 circles to form a rope loop, the roller of the claw just reaches the low slide section of the cam track on the frame body to drive the movable claw to open to prepare for grabbing the double-strand twine, and after the claw of the knotting mouth 403 bites the twine, the wire device 407 matched with the parallel D knotter returns and puts the wire into the notch of the knotter frame 402 just rotated to the upper side to be used as the head of the wire before the next knotting. After the knotting nozzle 403 bites the wire, the cutter holder 406 starts to move, and the two strands of the binding string are cut off simultaneously by the cutter on the cutter holder 406, so that the broken end of the wire falls freely. At this time, the tool rest still continues to move, the hooked forceps of the knotting forceps mouth 403 can push the rope loop on the knotting forceps mouth to the tip and then fall off, and the tripping action is completed, namely, a dead knot with the same length as two rope ends is formed. The parallel D knotter 4 can transversely or longitudinally knot two ropes on the crab body once, so that the working procedures are reduced, and the time is saved.

The device of the whole arc-shaped rail type automatic crab binding device binds crabs according to a series of processes of feeding, lifting, fixing, binding, moving, lifting again, fixing, binding, discharging and the like, and can be externally connected with the existing packaging technical equipment to package and transport the crabs after the binding is finished. In addition, the invention is also provided with a safety system which comprises an emergency stop button and a red alarm lamp; the emergency stop button can give an alarm to stop the vehicle in time when the binding is unreasonable and a fault is met in the running process of the equipment; the red alarm lamp can give an alarm in time when the equipment encounters a safety fault, and the red lamp attracts attention, so that the striking effect is obvious.

The arc-shaped rail type automatic crab binding device adopts a plc-200 series as a control unit of the system, can be used for controlling each driving mechanism, and is not described again because the control technology belongs to the conventional control technology; and plc-200 is cheap, and the programming is simple, and the technology is mature and can completely satisfy the control needs of the equipment.

The working principle of the invention is as follows:

the invention is characterized in that the invention comprises a base 1, a two-dimensional moving platform 2 is arranged on the upper surface of the base 1, two transverse ball screw guide rails 201 and a longitudinal ball screw guide rail 202 are arranged on the two-dimensional moving platform 2, wherein a guide rail platform 203 for arranging a rotating rod 204 is arranged on the longitudinal ball screw guide rail 202, and a U-shaped fixed arm 205 is connected on the rotating rod 204. In addition, the circular arc-shaped track 3 is provided with a feed inlet 301, a rotary opening 302 and a discharge outlet 303. Placed in the circular arc track is a binding mechanism 4 of a parallel D-shaped knotter, wherein a driving fluted disc 401, a knotter frame 402, a knotting nozzle 403, a helical gear 404, a worm 405, a tool rest 406, a wire guide device 407 matched with the parallel D-shaped knotter, an electric rotating rod A408 and an electric rotating rod B409 are arranged. Eight support columns 5 used for supporting the circular arc type rails are arranged below the circular arc type rails 3, and the bottom of each support column 5 is matched with the base 1 through four screws. There are also a linear elevating mechanism 6 at the feed port 301 and the discharge port 303, respectively, and a linear rotary elevating mechanism 7 at the rotary port. Connected to the U-shaped securing arm 205 is a crab securing mechanism 8 comprising an L-shaped barrier 801, a telescoping rod 802 containing springs, rollers 803 connected to the telescoping rod and capable of sliding freely within the circular arc track, and a joint 804 directly engaging the U-shaped securing arm. In a binding mechanism of four parallel D-shaped knotters, a rope 9 for binding crabs and a wire coiling drum 10 for storing the rope are arranged, and high-strength glass 11 is arranged at a rotating port.

The two-dimensional moving platform structure 2 comprises a transverse ball screw guide rail 201 and a longitudinal ball screw guide rail 202, so that two-dimensional movement of the fixing mechanism 8 on a horizontal plane can be realized, in addition, a rotating motor is arranged in a rotating rod 204 on the guide rail platform 203, clockwise or anticlockwise 90-degree rotating action can be carried out under the action of an electric signal, then a U-shaped fixing arm 205 is driven to rotate, further the fixing mechanism 8 is driven to rotate, and finally crabs are driven to rotate on the horizontal plane; thus the crabs are driven by the fixing mechanism 8 to realize a complete movement in the circular arc-shaped track 3.

In addition, the places on the lifting

mechanisms

601 and 602 of the material inlet and the material outlet for bearing and placing the crabs are designed into special-shaped grooves which are built according to the average body size of the crabs and refer to the shape of the crabs when the crabs are placed in holes; the reason for this is that the crabs will remain in a contracted state when they are put down due to their own biological self-protective properties. Therefore, when the crabs are put down to the platform on the lifting mechanism, the crabs can be kept stable so as to be conveyed to the inner sides of the four L-shaped baffles 801 at the feeding port for fixing in a very short time and conveyed to the lifting mechanism 7 at the rotating port, and the functions of carrying, conveying and the like of the crabs are completed.

The fixing mechanism 8 is characterized in that four L-shaped baffles 801 are used for fixing the crabs, and flexible sponge foam substances are arranged on the inner sides of the L-shaped baffles to clamp the crabs without damage in consideration of special conditions of the materials of the crabs. The L shape is not a real L shape but a circular arc shape similar to the shape between the crab tongs and four legs on one side. During the extrusion process, according to the stress behavior of the crabs, the electric telescopic rod 802 arranged on the L-shaped baffle 801 can automatically change the telescopic amount so as to ensure the firm fixation of the crabs. In addition, the telescopic rods of the other two L-shaped baffles rigidly connected with the rollers 803 which freely slide in the arc-shaped track 3 contain springs which can passively adjust the telescopic amount to match the two L-shaped baffles at the outer side to firmly fix the crab.

After the crabs are fixed, the L-shaped baffle 801 moves to a position to be bound in the arc-shaped guide rail through the ball screw guide rail and the rotating rod under the action of the two-dimensional moving platform 2 through the joint 804 matched with the U-shaped fixed arm. Then the parallel D-type knotter 4 and the wire device 407 matched with the parallel D-type knotter guide the wire 9 into the knotting mouth 403 of the knotter under the action of the electric rotating rod A408 and the electric rotating rod B409, and complete knotting and binding are completed. At the moment, the rope is still continuous, and the next knotting can be continuously carried out, so that the continuity of the action is realized. The crabs are transversely knotted and bound twice from the feeding hole 301 to the rotating hole 302, but the transverse positions of the two knotted and bound twice are different, so that the multilayer property of winding during binding is simulated to the maximum extent, the efficiency of transverse knotting and binding at two positions is ensured, and the rope is prevented from being wound on the same section of the crabs; in addition, after the crab passes through the lifting mechanism 7 at the rotating opening and rotates by 90 degrees, the crab is prepared to be longitudinally bound and knotted twice, and finally, a double-well rope track is completed. This completes the tying of a crab and carries the crab to the point of the hatch lift mechanism 602, facilitating further action by the operator or packer.

Claims

1. An automatic crab binding device with an arc-shaped rail is characterized by comprising a base (1), wherein a two-dimensional moving platform (2) is arranged on the base (1), an arc-shaped rail (3) is arranged on the outer side of the two-dimensional moving platform (2) in a surrounding manner, a fixing mechanism (8) is arranged on the two-dimensional moving platform (2), a supporting column (5) used for supporting the arc-shaped rail (3) is arranged below the arc-shaped rail (3), the supporting column (5) is matched with the base (1), a feeding hole (301), a rotating opening (302) and a discharging hole (303) are arranged on the arc-shaped rail (3), a linear lifting mechanism (6) is arranged below the feeding hole (301) and the discharging hole (303), a linear rotating lifting mechanism (7) is arranged below the rotating opening (302), and a D-shaped knotter (4) is arranged on the arc-shaped rail (3), the base (1) is provided with a wire rope (9) for binding crabs and a wire coiling cylinder (10) for storing the wire rope.

2. The automatic crab binding device with the arc-shaped rail according to claim 1, wherein the two-dimensional moving platform (2) comprises two first transverse ball screw guide rails (201) and a second longitudinal ball screw guide rail (202), wherein the second longitudinal ball screw guide rail (202) is further provided with a guide platform (203) for arranging a rotating rod (204), the rotating rod (204) is provided with a U-shaped fixed arm (205), the two first transverse ball screw guide rails (201) are fixed on the base (1) through bolts, and two supporting seats are arranged below the second longitudinal ball screw guide rail (202) and connected with the two first transverse ball screw guide rails (201).

3. The automated crab binding apparatus of claim 2, wherein the U-shaped fixed arm (205) is formed of two identical symmetrical parts.

4. The automatic crab binding device with the arc-shaped track is characterized in that the fixing mechanism (8) comprises four L-shaped baffles (801) and four telescopic rods (802) with springs, the four L-shaped baffles (801) are divided into two groups, the four telescopic rods (802) with the springs are corresponding to the four L-shaped baffles, two L-shaped baffles (801) are respectively and rigidly connected with rollers (803) capable of freely sliding in the arc-shaped track (3) through the telescopic rods (802) with the springs, the other two L-shaped baffles (801) are respectively and rigidly connected with connectors (804) through the telescopic rods (802) with the springs, and the two connectors (804) are matched with the U-shaped fixing arm (205).

5. The arc-shaped rail type automatic crab binding device according to claim 4, wherein the inner side of the L-shaped baffle (801) is filled with a flexible sponge-like foam material.

6. The arc-shaped rail type automatic crab binding device according to claim 1, wherein a high-strength glass (11) is provided at the rotating opening (302).

7. The automatic arc-shaped rail type crab binding device according to claim 1, wherein the linear type lifting mechanism (6) comprises a feed inlet lifting mechanism (601) and a discharge outlet lifting mechanism (602), and the positions of the feed inlet lifting mechanism (601) and the discharge outlet lifting mechanism (602) for bearing and placing crabs are special-shaped grooves.

8. The automatic crab binding device with the arc-shaped track is characterized in that the D-shaped knotter (4) comprises a driving fluted disc (401), the driving fluted disc (401) is driven by an electric push rod A (408), a wire device (407) matched with the D-shaped knotter (4) is arranged on the D-shaped knotter (4), the wire device (407) matched with the D-shaped knotter (4) is driven by an electric rotating rod B (409), the D-shaped knotter (4) and the wire device (407) matched with the D-shaped knotter (4) guide a wire rope (9) into a knotting nozzle (403) of the knotter, and the knotting nozzle (403) is matched with a worm (405) with a notch disc and a tool rest (406) for cutting the wire rope (9).

9. The automatic curved rail-type crab binding device according to claim 1, wherein the number of the D-shaped knotters (4) is four, two D-shaped knotters (4) in each set are arranged in parallel, every two D-shaped knotters (4) are matched with the wire guiding device (407), two sets of the D-shaped knotters are knotted transversely, the other two sets of the D-shaped knotters are knotted longitudinally, and knotting traces of the two parallel D-shaped knotters (4) in each set to crabs are not on the same section.